Concentration difficulty is a decreased ability to focus your thoughts on something. Concentration difficulties can be related to difficulty staying awake, impulsiveness, intrusive thoughts or concerns, overactivity, or inattention. They can be caused by medical, cognitive or psychological problems or may be related to sleep disorders or medications, alcohol or drugs.

​

Concentration difficulties may be long-term, established conditions, as in the case of attention deficit disorder, or they may arise as a result of illness or another event.